123457040

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{449}}^1\times {\mathrm{491}}^1$

素因数の和:960

約数の個数: 80

約数和(自身を含む): 329443200

約数和(自身を除く): 205986160

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 280, 449, 491, 560, 898, 982, 1796, 1964, 2245, 2455, 3143, 3437, 3592, 3928, 4490, 4910, 6286, 6874, 7184, 7856, 8980, 9820, 12572, 13748, 15715, 17185, 17960, 19640, 25144, 27496, 31430, 34370, 35920, 39280, 50288, 54992, 62860, 68740, 125720, 137480, 220459, 251440, 274960, 440918, 881836, 1102295, 1543213, 1763672, 2204590, 3086426, 3527344, 4409180, 6172852, 7716065, 8818360, 12345704, 15432130, 17636720, 24691408, 30864260, 61728520, 123457040]

約数ペア:

[(1, 123457040), (2, 61728520), (4, 30864260), (5, 24691408), (7, 17636720), (8, 15432130), (10, 12345704), (14, 8818360), (16, 7716065), (20, 6172852), (28, 4409180), (35, 3527344), (40, 3086426), (56, 2204590), (70, 1763672), (80, 1543213), (112, 1102295), (140, 881836), (280, 440918), (449, 274960), (491, 251440), (560, 220459), (898, 137480), (982, 125720), (1796, 68740), (1964, 62860), (2245, 54992), (2455, 50288), (3143, 39280), (3437, 35920), (3592, 34370), (3928, 31430), (4490, 27496), (4910, 25144), (6286, 19640), (6874, 17960), (7184, 17185), (7856, 15715), (8980, 13748), (9820, 12572)]